メカクレ彼女と寝取られの呪い

Eddy's girlfriend Fia has an incurable illness,
and they make a pact with a witch to save her life.
However, in exchange, she is cursed with a spell of cuckoldry.

From there, the country is enveloped in war, and they must explore an unknown land to overcome the curse. Can they return to normal life? -DL Site